Black people are a mutation? The fact that the races that have more exposure to the sun are darker than those with less exposure has absolutely nothing to do with it?
If birds ate black people, in a million years any white people left that lived their lives over generations hundreds/thousands of year wearing no clothes in the African sun would turn into black people themselves. I don't think race color is a mutation but an adaptation to sun exposure over many generations.
But based on the mutation idea,
Did that above insect just by chance one day get a mutation that happens to look like that leaf and they just happen to develop the idea to hide within leaves that just happen to look like them?
With chameleons and their ability to do a near perfect blending in based on the predator and how well they see and less blending in if the predator does not see as well, far too many loopholes for those to be just random mutations.